{"id":2506,"date":"2024-06-14T10:02:07","date_gmt":"2024-06-14T10:02:07","guid":{"rendered":"https:\/\/howtogeek.blog\/ja\/?p=2506"},"modified":"2024-06-14T10:02:07","modified_gmt":"2024-06-14T10:02:07","slug":"how-to-roll-back-from-ios-18-beta-to-ios-17-without-losing-data-ja","status":"publish","type":"post","link":"https:\/\/howtogeek.blog\/ja\/how-to-roll-back-from-ios-18-beta-to-ios-17-without-losing-data-ja\/","title":{"rendered":"\u30c7\u30fc\u30bf\u3092\u5931\u3046\u3053\u3068\u306a\u304f iOS 18 \u30d9\u30fc\u30bf\u7248\u304b\u3089 iOS 17 \u306b\u30ed\u30fc\u30eb\u30d0\u30c3\u30af\u3059\u308b\u65b9\u6cd5"},"content":{"rendered":"<p>iOS 18 \u30d9\u30fc\u30bf\u7248\u304b\u3089 iOS 17 \u306b\u30c0\u30a6\u30f3\u30b0\u30ec\u30fc\u30c9\u3057\u305f\u3044\u3067\u3059\u304b? iOS 18 \u958b\u767a\u8005\u5411\u3051\u30d9\u30fc\u30bf\u7248\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3057\u305f\u5834\u5408\u3001\u65b0\u3057\u3044\u30db\u30fc\u30e0\u753b\u9762\u306e\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u3001\u5199\u771f\u30a2\u30d7\u30ea\u3001\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb \u30bb\u30f3\u30bf\u30fc\u6a5f\u80fd\u306b\u5bfe\u3059\u308b\u5f53\u521d\u306e\u9b45\u529b\u306f\u3001\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u306e\u5b89\u5b9a\u6027\u306e\u554f\u984c\u304c\u767a\u751f\u3059\u308b\u306b\u3064\u308c\u3066\u8584\u308c\u3066\u3044\u304f\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u3053\u308c\u306f\u30d9\u30fc\u30bf\u7248\u3092\u9078\u629e\u3059\u308b\u969b\u306b\u53d7\u3051\u5165\u308c\u308b\u30ea\u30b9\u30af\u3067\u3059\u3002<\/p>\n<p>\u305f\u3060\u3057\u3001\u3053\u308c\u3089\u306e\u5f71\u97ff\u3092\u5341\u5206\u306b\u8003\u616e\u305b\u305a\u3001\u5143\u306b\u623b\u3057\u305f\u3044\u5834\u5408\u306f\u3001\u30c7\u30fc\u30bf\u3092\u5931\u3046\u3053\u3068\u306a\u304f\u3001iOS 18 \u958b\u767a\u8005\u30d9\u30fc\u30bf\u7248\u304b\u3089\u5b89\u5b9a\u3057\u305f iOS 17 \u30d0\u30fc\u30b8\u30e7\u30f3\u306b\u30ed\u30fc\u30eb\u30d0\u30c3\u30af\u3059\u308b\u65b9\u6cd5\u3092\u6b21\u306b\u793a\u3057\u307e\u3059\u3002\u3053\u306e\u30d7\u30ed\u30bb\u30b9\u306f\u3001iPadOS 18 \u304b\u3089 iPadOS 17 \u3078\u306e\u30c0\u30a6\u30f3\u30b0\u30ec\u30fc\u30c9\u306b\u3082\u9069\u7528\u3055\u308c\u307e\u3059\u3002<\/p>\n<h2>\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u304b\u3089\u4ee5\u524d\u306eiOS\u30d0\u30fc\u30b8\u30e7\u30f3\u306b\u5fa9\u5143\u3067\u304d\u307e\u3059\u304b<\/h2>\n<p><a href=\"https:\/\/support.apple.com\/en-in\/guide\/itunes\/itns3280\/windows\" rel=\"noreferrer noopener\" target=\"_blank\">iOS 18 \u306b\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u3059\u308b\u524d\u306biTunes<\/a>\u307e\u305f\u306f<a href=\"https:\/\/support.apple.com\/en-in\/108796\" rel=\"noreferrer noopener\" target=\"_blank\">Finder<\/a>\u7d4c\u7531\u3067 iPhone \u3092\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u3057\u3066\u3044\u305f\u5834\u5408\u3001\u3059\u3050\u306b\u5fa9\u5143\u3057\u305f\u304f\u306a\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002iOS 17 \u3067\u4f5c\u6210\u3057\u305f\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u3092\u5fa9\u5143\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u3059\u304c\u3001iPhone \u306f\u73fe\u5728 iOS 18 \u3092\u5b9f\u884c\u3057\u3066\u3044\u308b\u305f\u3081\u3001\u53e4\u3044\u30c7\u30fc\u30bf\u3068\u30a2\u30d7\u30ea\u306e\u307f\u304c\u5fa9\u5143\u3055\u308c\u3001\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2 \u30d0\u30fc\u30b8\u30e7\u30f3\u306f\u30ed\u30fc\u30eb\u30d0\u30c3\u30af\u3055\u308c\u307e\u305b\u3093\u3002<\/p>\n<p>\u307e\u305f\u3001iOS 18 \u3067\u65b0\u898f\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u3092\u4f5c\u6210\u3057\u3001iOS 17 \u306b\u30c0\u30a6\u30f3\u30b0\u30ec\u30fc\u30c9\u3057\u3066\u304b\u3089 iOS 18 \u306e\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u3092\u5fa9\u5143\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u305b\u3093\u3002Apple \u306f\u3001\u30c7\u30fc\u30bf\u69cb\u9020\u3084\u6a5f\u80fd\u306b\u6f5c\u5728\u7684\u306a\u975e\u4e92\u63db\u6027\u304c\u3042\u308b\u305f\u3081\u3001\u65b0\u3057\u3044 iOS \u30d0\u30fc\u30b8\u30e7\u30f3\u304b\u3089\u53e4\u3044\u30d0\u30fc\u30b8\u30e7\u30f3\u3078\u306e\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u306e\u5fa9\u5143\u3092\u5236\u9650\u3057\u3066\u3044\u307e\u3059\u3002iOS 17 \u306f iOS 18 \u304c\u3069\u306e\u3088\u3046\u306a\u3082\u306e\u304b\u3092\u8a8d\u8b58\u3057\u3066\u3044\u306a\u3044\u304b\u3089\u3067\u3059\u3002<\/p>\n<p>iOS 18 \u304b\u3089 iOS 17 \u306b\u30ed\u30fc\u30eb\u30d0\u30c3\u30af\u3059\u308b\u306b\u306f\u3001<strong>\u30ea\u30ab\u30d0\u30ea\u30e2\u30fc\u30c9\u3092\u4f7f\u7528\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u30ea\u30ab\u30d0\u30ea\u30e2\u30fc\u30c9\u3067\u306f\u3001<\/strong> iPhone \u4e0a\u306e\u3059\u3079\u3066\u306e\u30c7\u30fc\u30bf\u304c\u6d88\u53bb\u3055\u308c\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u72b6\u6cc1\u306b\u5fdc\u3058\u3066\u3001\u5f8c\u3067\u30c7\u30fc\u30bf\u3092\u5fa9\u5143\u3067\u304d\u307e\u3059\u3002<\/p>\n<ul>\n<li><strong>iOS 17 \u306e iTunes \u307e\u305f\u306f Finder \u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u304c\u3042\u308b\u5834\u5408:<\/strong>\u30c7\u30d0\u30a4\u30b9\u3092 iOS 17 \u306b\u30c0\u30a6\u30f3\u30b0\u30ec\u30fc\u30c9\u3057\u307e\u3059\u3002\u30c0\u30a6\u30f3\u30b0\u30ec\u30fc\u30c9\u5f8c\u3001iTunes \u307e\u305f\u306f Finder \u3092\u4f7f\u7528\u3057\u3066\u540c\u3058\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u3092\u5fa9\u5143\u3057\u307e\u3059\u3002<\/li>\n<\/ul>\n<ul>\n<li><strong>iCloud \u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u304c\u3042\u308b\u5834\u5408:<\/strong>\u30c7\u30d0\u30a4\u30b9\u3092 iOS 17 \u306b\u30c0\u30a6\u30f3\u30b0\u30ec\u30fc\u30c9\u3057\u307e\u3059\u3002\u30c0\u30a6\u30f3\u30b0\u30ec\u30fc\u30c9\u5f8c\u3001iCloud \u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u3092\u5fa9\u5143\u3057\u3066\u3001\u30a2\u30d7\u30ea\u3001\u30d5\u30a1\u30a4\u30eb\u3001\u305d\u306e\u4ed6\u306e\u30c7\u30fc\u30bf\u3092\u5fa9\u5143\u3057\u307e\u3059\u3002<\/li>\n<\/ul>\n<ul>\n<li><strong>\u73fe\u5728\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u304c\u306a\u3044\u5834\u5408:<\/strong>\u30c0\u30a6\u30f3\u30b0\u30ec\u30fc\u30c9\u3059\u308b\u524d\u306b\u3001iPhone \u306e\u30c7\u30fc\u30bf\u3092\u624b\u52d5\u3067 iCloud \u306b\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u3057\u3066\u304f\u3060\u3055\u3044 (\u53ef\u80fd\u306a\u5834\u5408)\u3002iCloud \u306e\u7a7a\u304d\u5bb9\u91cf\u304c\u8db3\u308a\u306a\u3044\u5834\u5408\u306f\u3001\u91cd\u8981\u306a\u30d5\u30a1\u30a4\u30eb\u3092\u5225\u306e\u30af\u30e9\u30a6\u30c9 \u30b5\u30fc\u30d3\u30b9\u307e\u305f\u306f\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u30fc\u306b\u4fdd\u5b58\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u30c0\u30a6\u30f3\u30b0\u30ec\u30fc\u30c9\u5f8c\u306b\u5fa9\u5143\u3067\u304d\u307e\u3059\u3002<\/li>\n<\/ul>\n<h2>iOS 18 \u30d9\u30fc\u30bf\u7248\u304b\u3089 iOS 17 \u5b89\u5b9a\u7248\u3078\u306e\u30ed\u30fc\u30eb\u30d0\u30c3\u30af<\/h2>\n<p>\u30c0\u30a6\u30f3\u30b0\u30ec\u30fc\u30c9\u5f8c\u306b\u30c7\u30fc\u30bf\u3092\u5fa9\u5143\u3059\u308b\u65b9\u6cd5\u304c\u308f\u304b\u3063\u305f\u306e\u3067\u3001iOS 18 \u30d9\u30fc\u30bf\u7248\u304b\u3089 iOS 17 \u306b\u30ed\u30fc\u30eb\u30d0\u30c3\u30af\u3059\u308b\u624b\u9806\u3092\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002\u3053\u308c\u3092\u884c\u3046\u306b\u306f\u3001iPhone (\u307e\u305f\u306f iPad) \u306e\u30ea\u30ab\u30d0\u30ea \u30e2\u30fc\u30c9\u3092\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002\u65b9\u6cd5\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n<h3>\u524d\u63d0\u6761\u4ef6<\/h3>\n<ul>\n<li><a href=\"https:\/\/support.apple.com\/en-in\/118290\" rel=\"noreferrer noopener\" target=\"_blank\">Finder \u3092\u642d\u8f09\u3057\u305f Mac \u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u3001\u307e\u305f\u306fiTunes \u304c\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3055\u308c\u305f<\/a>Windows \u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u3002<\/li>\n<li>\u305d\u308c\u305e\u308c iOS 18 \u307e\u305f\u306f iPadOS 18 \u3092\u5b9f\u884c\u3057\u3066\u3044\u308b iPhone \u307e\u305f\u306f iPad\u3002<\/li>\n<li>\u5fa9\u5143\u5f8c\u306b iPhone \u3092\u30a2\u30af\u30c6\u30a3\u30d9\u30fc\u30c8\u3059\u308b\u305f\u3081\u306e Apple ID (\u73fe\u5728\u306f Apple \u30a2\u30ab\u30a6\u30f3\u30c8\u3068\u547c\u3070\u308c\u3066\u3044\u307e\u3059) \u3068\u30d1\u30b9\u30ef\u30fc\u30c9\u3002<\/li>\n<\/ul>\n<h3>\u30b9\u30c6\u30c3\u30d71: iPhone\u3092\u30ea\u30ab\u30d0\u30ea\u30e2\u30fc\u30c9\u306b\u3059\u308b<\/h3>\n<p><strong>1.<\/strong>\u96fb\u6e90\/\u30b5\u30a4\u30c9\u30ad\u30fc\u3068\u3044\u305a\u308c\u304b\u306e\u97f3\u91cf\u30dc\u30bf\u30f3\u3092\u9577\u62bc\u3057\u3057\u3066\u3001\u96fb\u6e90\u30aa\u30d5\u30b9\u30e9\u30a4\u30c0\u30fc\u304c\u8868\u793a\u3055\u308c\u305f\u3089\u3001\u30b9\u30e9\u30a4\u30c9\u3057\u3066\u96fb\u6e90\u3092\u30aa\u30d5\u306b\u3057\u3066\u3001iPhone \u306e\u96fb\u6e90\u3092\u30aa\u30d5\u306b\u3057\u307e\u3059\u3002<\/p>\n<figure class=\"wp-block-image\"><img alt=\"iOS 18 \u958b\u767a\u8005\u30d9\u30fc\u30bf\u7248\u3092\u5b9f\u884c\u3057\u3066\u3044\u308b iPhone 15 Pro Max \u3067\u30b9\u30e9\u30a4\u30c9\u3057\u3066\u96fb\u6e90\u3092\u30aa\u30d5\u306b\u3059\u308b\u30aa\u30d7\u30b7\u30e7\u30f3\" class=\"wp-image\" decoding=\"async\" height=\"577\" loading=\"lazy\" src=\"https:\/\/cdn.howtogeek.blog\/wp-content\/uploads\/2024\/06\/Switch-Off-iPhone-1024x577-1.webp\" title=\"iOS 18 \u958b\u767a\u8005\u30d9\u30fc\u30bf\u7248\u3092\u5b9f\u884c\u3057\u3066\u3044\u308b iPhone 15 Pro Max \u3067\u30b9\u30e9\u30a4\u30c9\u3057\u3066\u96fb\u6e90\u3092\u30aa\u30d5\u306b\u3059\u308b\u30aa\u30d7\u30b7\u30e7\u30f3\" width=\"1024\"\/><\/figure>\n<p><strong>2.<\/strong> iPhone \u306e\u96fb\u6e90\/\u30b5\u30a4\u30c9\u30ad\u30fc\u3092\u9577\u62bc\u3057\u3057\u3066\u3001\u3059\u3050\u306b Mac \u307e\u305f\u306f Windows PC \u306b\u63a5\u7d9a\u3057\u307e\u3059\u3002\u96fb\u6e90\u30ad\u30fc\u306f\u62bc\u3057\u305f\u307e\u307e\u306b\u3057\u307e\u3059\u3002iPad \u306e\u5834\u5408\u306f\u3001<a href=\"https:\/\/support.apple.com\/en-in\/108925\" rel=\"noreferrer noopener\" target=\"_blank\">\u3053\u3053\u3067\u30dc\u30bf\u30f3\u306e\u7d44\u307f\u5408\u308f\u305b\u3092<\/a>\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u3053\u306e\u30ac\u30a4\u30c9\u3067\u306f iPhone \u3092\u4f8b\u306b\u8aac\u660e\u3057\u307e\u3059\u3002<\/p>\n<p><strong>3.<\/strong> iPhone \u306b Apple \u30ed\u30b4\u304c\u8868\u793a\u3055\u308c\u307e\u3059\u3002\u3053\u306e\u6642\u70b9\u3067\u96fb\u6e90\u30ad\u30fc\u3092\u653e\u3057\u307e\u3059\u3002<\/p>\n<figure class=\"wp-block-image\"><img alt=\"\u30ea\u30ab\u30d0\u30ea\u30e2\u30fc\u30c9\u306e iPhone 15 Pro Max\" class=\"wp-image\" decoding=\"async\" height=\"577\" loading=\"lazy\" src=\"https:\/\/cdn.howtogeek.blog\/wp-content\/uploads\/2024\/06\/iPhone-Recovery-Mode-1024x577-1.webp\" title=\"\u30ea\u30ab\u30d0\u30ea\u30e2\u30fc\u30c9\u306e iPhone 15 Pro Max\" width=\"1024\"\/><\/figure>\n<p><strong>4.<\/strong> iPhone \u306f\u81ea\u52d5\u7684\u306b\u30ea\u30ab\u30d0\u30ea \u30e2\u30fc\u30c9\u306b\u5165\u308a\u307e\u3059\u3002\u9ed2\u3044\u753b\u9762\u306b\u30b1\u30fc\u30d6\u30eb\u3068\u30ce\u30fc\u30c8\u30d1\u30bd\u30b3\u30f3\u3092\u6307\u3059\u77e2\u5370\u304c\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/p>\n<p><strong>5.<\/strong>\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u4e0a\u3067\u3001iPhone \u306e\u63a5\u7d9a\u3092\u8a31\u53ef\u3059\u308b\u30d7\u30ed\u30f3\u30d7\u30c8\u3092\u53d7\u3051\u5165\u308c\u307e\u3059\u3002<\/p>\n<figure class=\"wp-block-image\"><img alt=\"Mac \u306e iPhone \u30ea\u30ab\u30d0\u30ea \u30e2\u30fc\u30c9\u3067\u30a2\u30af\u30bb\u30b5\u30ea\u306e\u63a5\u7d9a\u3092\u8a31\u53ef\u3059\u308b\u30dd\u30c3\u30d7\u30a2\u30c3\u30d7\" class=\"wp-image\" decoding=\"async\" height=\"529\" loading=\"lazy\" src=\"https:\/\/cdn.howtogeek.blog\/wp-content\/uploads\/2024\/06\/Allow-accessory-prompt-1024x529-1.webp\" title=\"Mac \u306e iPhone \u30ea\u30ab\u30d0\u30ea \u30e2\u30fc\u30c9\u3067\u30a2\u30af\u30bb\u30b5\u30ea\u306e\u63a5\u7d9a\u3092\u8a31\u53ef\u3059\u308b\u30dd\u30c3\u30d7\u30a2\u30c3\u30d7\" width=\"1024\"\/><\/figure>\n<h3>\u30b9\u30c6\u30c3\u30d72\uff1aFinder\/iTunes\u3092\u4f7f\u7528\u3057\u3066iOS 18\u30d9\u30fc\u30bf\u7248\u304b\u3089iOS 17\u306b\u30ed\u30fc\u30eb\u30d0\u30c3\u30af\u3059\u308b<\/h3>\n<p><strong>1.<\/strong> Mac \u3092\u4f7f\u7528\u3057\u3066\u3044\u308b\u5834\u5408\u306f\u3001Finder \u3092\u958b\u304d\u307e\u3059\u3002Windows \u306e\u5834\u5408\u306f\u3001iTunes \u30a2\u30d7\u30ea\u3092\u958b\u304d\u307e\u3059\u3002<\/p>\n<p><strong>2.<\/strong>\u30b5\u30a4\u30c9\u30d0\u30fc\u30e1\u30cb\u30e5\u30fc\u306b iPhone \u304c\u8868\u793a\u3055\u308c\u307e\u3059\u306e\u3067\u3001\u305d\u308c\u3092\u30af\u30ea\u30c3\u30af\u3057\u307e\u3059\u3002<\/p>\n<p><strong>3.<\/strong> iPhone\u3092<strong>\u66f4\u65b0\u3059\u308b<\/strong>\u304b<strong>\u5fa9\u5143\u3059\u308b<\/strong>\u304b\u3092\u5c0b\u306d\u308b\u30dd\u30c3\u30d7\u30a2\u30c3\u30d7\u304c\u8868\u793a\u3055\u308c\u307e\u3059\u3002 <strong>\u300c\u5fa9\u5143\u300d<\/strong>\u3092\u30af\u30ea\u30c3\u30af\u3057\u307e\u3059\u3002<\/p>\n<figure class=\"wp-block-image\"><img alt=\"Mac Finder \u306e iPhone \u306e\u5fa9\u5143\u30aa\u30d7\u30b7\u30e7\u30f3\" class=\"wp-image\" decoding=\"async\" height=\"557\" loading=\"lazy\" src=\"https:\/\/cdn.howtogeek.blog\/wp-content\/uploads\/2024\/06\/Restore-iPhone-1-1024x557-1.webp\" title=\"Mac Finder \u306e iPhone \u306e\u5fa9\u5143\u30aa\u30d7\u30b7\u30e7\u30f3\" width=\"1024\"\/><\/figure>\n<p><strong>4.<\/strong>\u6b21\u306b\u3001\u6b21\u306e\u30dd\u30c3\u30d7\u30a2\u30c3\u30d7\u3067<strong>\u300c\u5fa9\u5143\u3068\u66f4\u65b0\u300d\u3092\u30af\u30ea\u30c3\u30af\u3057\u307e\u3059\u3002<\/strong><\/p>\n<figure class=\"wp-block-image\"><img alt=\"Mac Finder \u306e iPhone \u306e\u5fa9\u5143\u30aa\u30d7\u30b7\u30e7\u30f3\" class=\"wp-image\" decoding=\"async\" height=\"530\" loading=\"lazy\" src=\"https:\/\/cdn.howtogeek.blog\/wp-content\/uploads\/2024\/06\/Restore-iPhone-2-1024x530-1.webp\" title=\"Mac Finder \u306e iPhone \u306e\u5fa9\u5143\u30aa\u30d7\u30b7\u30e7\u30f3\" width=\"1024\"\/><\/figure>\n<p><strong>5.<\/strong>\u5229\u7528\u898f\u7d04\u306b\u540c\u610f\u3057\u3001\u753b\u9762\u306e\u6307\u793a\u306b\u5f93\u3044\u307e\u3059\u3002iPhone \u304c\u5fa9\u5143\u3055\u308c\u308b\u307e\u3067\u304a\u5f85\u3061\u304f\u3060\u3055\u3044\u3002<\/p>\n<figure class=\"wp-block-image\"><img alt=\"Mac\u306eFinder\u7d4c\u7531\u3067\u30ea\u30ab\u30d0\u30ea\u30e2\u30fc\u30c9\u3067iPhone\u3092iOS 17\u306b\u5fa9\u5143\u3059\u308b\" class=\"wp-image\" decoding=\"async\" height=\"556\" loading=\"lazy\" src=\"https:\/\/cdn.howtogeek.blog\/wp-content\/uploads\/2024\/06\/Restore-iPhone-4-1024x556-1.webp\" title=\"Mac\u306eFinder\u7d4c\u7531\u3067\u30ea\u30ab\u30d0\u30ea\u30e2\u30fc\u30c9\u3067iPhone\u3092iOS 17\u306b\u5fa9\u5143\u3059\u308b\" width=\"1024\"\/><\/figure>\n<p>\u3053\u308c\u3067\u3001iPhone \u3067\u5229\u7528\u53ef\u80fd\u306a\u6700\u65b0\u306e\u5b89\u5b9a\u3057\u305f\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2 (iOS 17) \u304c\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3055\u308c\u307e\u3059\u3002\u30d7\u30ed\u30bb\u30b9\u5168\u4f53\u306b\u306f\u7d04 15 \uff5e 20 \u5206\u304b\u304b\u308a\u307e\u3059\u3002\u3053\u306e\u4f8b\u3067\u306f\u3001iPhone 15 Pro Max \u3092\u5fa9\u5143\u3057\u3066\u304a\u308a\u3001\u7d04 8 GB \u306e\u30c7\u30fc\u30bf\u306e\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u304c\u5fc5\u8981\u3067\u3057\u305f\u3002<\/p>\n<figure class=\"wp-block-image\"><img alt=\"iPhone 15 Pro Max\u304c\u5fa9\u5143\u3055\u308c\u3001iOS 18\u30d9\u30fc\u30bf\u7248\u304b\u3089iOS 17\u306b\u30ed\u30fc\u30eb\u30d0\u30c3\u30af\u3055\u308c\u307e\u3057\u305f\" class=\"wp-image\" decoding=\"async\" height=\"578\" loading=\"lazy\" src=\"https:\/\/cdn.howtogeek.blog\/wp-content\/uploads\/2024\/06\/iPhone-Restored-to-iOS-17-1024x578-1.webp\" title=\"iPhone 15 Pro Max\u304c\u5fa9\u5143\u3055\u308c\u3001iOS 18\u30d9\u30fc\u30bf\u7248\u304b\u3089iOS 17\u306b\u30ed\u30fc\u30eb\u30d0\u30c3\u30af\u3055\u308c\u307e\u3057\u305f\" width=\"1024\"\/><figcaption>iPhone 15 Pro Max\u3092iOS 17\u306b\u5fa9\u5143\u3057\u307e\u3057\u305f<\/figcaption><\/figure>\n<p>\u5b8c\u4e86\u3059\u308b\u3068\u3001iPhone \u306f\u81ea\u52d5\u7684\u306b iOS 17 \u3067\u8d77\u52d5\u3057\u307e\u3059\u3002\u63a5\u7d9a\u3092\u89e3\u9664\u3057\u3001 iTunes\u3001iCloud\u3001\u307e\u305f\u306f\u4ee5\u524d\u306b\u9078\u629e\u3057\u305f\u65b9\u6cd5\u3067<a href=\"https:\/\/support.apple.com\/en-in\/118105\" rel=\"noreferrer noopener\" target=\"_blank\">\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u3092\u5fa9\u5143\u3057\u307e\u3059<\/a>\u3002\u3053\u306e\u65b9\u6cd5\u3067\u3001\u3059\u3079\u3066\u306e\u30c7\u30fc\u30bf\u3092\u4fdd\u6301\u3057\u305f\u307e\u307e\u30c0\u30a6\u30f3\u30b0\u30ec\u30fc\u30c9\u304c\u6b63\u5e38\u306b\u5b8c\u4e86\u3057\u307e\u3059\u3002<\/p>\n<p>\u958b\u767a\u8005\u30d9\u30fc\u30bf\u7248\u306b\u518d\u5ea6\u53c2\u52a0\u3059\u308b\u304b\u3001\u30d1\u30d6\u30ea\u30c3\u30af\u30d9\u30fc\u30bf\u7248\uff087 \u6708\u306b\u30ea\u30ea\u30fc\u30b9\uff09\u3092\u5f85\u3064\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u307e\u305f\u306f\u3001\u4eca\u79cb\u306b\u4e88\u5b9a\u3055\u308c\u3066\u3044\u308b\u5b89\u5b9a\u3057\u305f\u30d1\u30d6\u30ea\u30c3\u30af\u30ea\u30ea\u30fc\u30b9\u3092\u5f85\u3064\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001iPhone 15 Pro \u304a\u3088\u3073 15 Pro Max \u306e Apple Intelligence \u6a5f\u80fd\u3082\u30ed\u30c3\u30af\u89e3\u9664\u3055\u308c\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>iOS 18 \u30d9\u30fc\u30bf\u7248\u304b\u3089 iOS 17 \u306b\u30c0\u30a6\u30f3\u30b0\u30ec\u30fc\u30c9\u3057\u305f\u3044\u3067\u3059\u304b? iOS 18 \u958b\u767a\u8005\u5411\u3051\u30d9\u30fc\u30bf\u7248\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3057\u305f\u5834\u5408\u3001\u65b0\u3057\u3044\u30db\u30fc\u30e0\u753b\u9762\u306e\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u3001\u5199\u771f\u30a2\u30d7\u30ea\u3001\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb \u30bb\u30f3\u30bf\u30fc\u6a5f\u80fd\u306b\u5bfe\u3059\u308b\u5f53\u521d\u306e\u9b45\u529b\u306f\u3001\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u306e\u5b89\u5b9a\u6027\u306e\u554f\u984c\u304c\u767a\u751f\u3059\u308b\u306b\u3064\u308c\u3066\u8584\u308c\u3066\u3044\u304f\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u3053\u308c\u306f\u30d9\u30fc\u30bf\u7248\u3092\u9078\u629e\u3059\u308b\u969b\u306b\u53d7\u3051\u5165\u308c\u308b\u30ea\u30b9\u30af\u3067\u3059\u3002 \u305f\u3060\u3057\u3001\u3053\u308c\u3089\u306e\u5f71\u97ff\u3092\u5341\u5206\u306b\u8003\u616e\u305b\u305a\u3001\u5143\u306b\u623b\u3057\u305f\u3044\u5834\u5408\u306f\u3001\u30c7\u30fc\u30bf\u3092\u5931\u3046\u3053\u3068\u306a\u304f\u3001iOS 18 \u958b\u767a\u8005\u30d9\u30fc\u30bf\u7248\u304b\u3089\u5b89\u5b9a\u3057\u305f iOS 17 \u30d0\u30fc\u30b8\u30e7\u30f3\u306b\u30ed\u30fc\u30eb\u30d0\u30c3\u30af\u3059\u308b\u65b9\u6cd5\u3092\u6b21\u306b\u793a\u3057\u307e\u3059\u3002\u3053\u306e\u30d7\u30ed\u30bb\u30b9\u306f\u3001iPadOS 18 \u304b\u3089 iPadOS 17 \u3078\u306e\u30c0\u30a6\u30f3\u30b0\u30ec\u30fc\u30c9\u306b\u3082\u9069\u7528\u3055\u308c\u307e\u3059\u3002 \u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u304b\u3089\u4ee5\u524d\u306eiOS\u30d0\u30fc\u30b8\u30e7\u30f3\u306b\u5fa9\u5143\u3067\u304d\u307e\u3059\u304b iOS 18 \u306b\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u3059\u308b\u524d\u306biTunes\u307e\u305f\u306fFinder\u7d4c\u7531\u3067 iPhone \u3092\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u3057\u3066\u3044\u305f\u5834\u5408\u3001\u3059\u3050\u306b\u5fa9\u5143\u3057\u305f\u304f\u306a\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002iOS 17 \u3067\u4f5c\u6210\u3057\u305f\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u3092\u5fa9\u5143\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u3059\u304c\u3001iPhone \u306f\u73fe\u5728 iOS 18 \u3092\u5b9f\u884c\u3057\u3066\u3044\u308b\u305f\u3081\u3001\u53e4\u3044\u30c7\u30fc\u30bf\u3068\u30a2\u30d7\u30ea\u306e\u307f\u304c\u5fa9\u5143\u3055\u308c\u3001\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2 \u30d0\u30fc\u30b8\u30e7\u30f3\u306f\u30ed\u30fc\u30eb\u30d0\u30c3\u30af\u3055\u308c\u307e\u305b\u3093\u3002 \u307e\u305f\u3001iOS 18 \u3067\u65b0\u898f\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u3092\u4f5c\u6210\u3057\u3001iOS 17 \u306b\u30c0\u30a6\u30f3\u30b0\u30ec\u30fc\u30c9\u3057\u3066\u304b\u3089 iOS 18 \u306e\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u3092\u5fa9\u5143\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u305b\u3093\u3002Apple \u306f\u3001\u30c7\u30fc\u30bf\u69cb\u9020\u3084\u6a5f\u80fd\u306b\u6f5c\u5728\u7684\u306a\u975e\u4e92\u63db\u6027\u304c\u3042\u308b\u305f\u3081\u3001\u65b0\u3057\u3044 iOS \u30d0\u30fc\u30b8\u30e7\u30f3\u304b\u3089\u53e4\u3044\u30d0\u30fc\u30b8\u30e7\u30f3\u3078\u306e\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u306e\u5fa9\u5143\u3092\u5236\u9650\u3057\u3066\u3044\u307e\u3059\u3002iOS 17 \u306f iOS 18 \u304c\u3069\u306e\u3088\u3046\u306a\u3082\u306e\u304b\u3092\u8a8d\u8b58\u3057\u3066\u3044\u306a\u3044\u304b\u3089\u3067\u3059\u3002 iOS 18 \u304b\u3089 iOS 17 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[11,63,249,21],"class_list":["post-2506","post","type-post","status-publish","format-standard","hentry","category-how-to","tag-ios","tag-ios-17","tag-ios-18","tag-iphone"],"acf":[],"_links":{"self":[{"href":"https:\/\/howtogeek.blog\/ja\/wp-json\/wp\/v2\/posts\/2506","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/howtogeek.blog\/ja\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/howtogeek.blog\/ja\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/howtogeek.blog\/ja\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/howtogeek.blog\/ja\/wp-json\/wp\/v2\/comments?post=2506"}],"version-history":[{"count":1,"href":"https:\/\/howtogeek.blog\/ja\/wp-json\/wp\/v2\/posts\/2506\/revisions"}],"predecessor-version":[{"id":2507,"href":"https:\/\/howtogeek.blog\/ja\/wp-json\/wp\/v2\/posts\/2506\/revisions\/2507"}],"wp:attachment":[{"href":"https:\/\/howtogeek.blog\/ja\/wp-json\/wp\/v2\/media?parent=2506"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/howtogeek.blog\/ja\/wp-json\/wp\/v2\/categories?post=2506"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/howtogeek.blog\/ja\/wp-json\/wp\/v2\/tags?post=2506"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}